Harrow.



C. W. MICHAEL.

HARROW.

APPLfcATroN FILED AUG. 10. 1914.

(JC W. MECHAEL.

HARROW, APPLICATION HL 5D AUG-10 i914.

@wanted 001;. 12, 1915.

2 SHEES-SHEET 2 if un( i Mmmm@ CLEMENT W. MICHAEL, F RACINE, WISCONSIN, .ASSIGNOR TO J. I. CASE PLOW WORKS, OF RACINE, WISCONSN, A CORPORATION 0F WISCONSIN.

HARROW.

1.1561111. specimen of Leiters raientratentea oet. 12, 191s.,i I l Application filed August 10, 1914.4 Serial No. 856,032.

Togli uiltom'tmog/ concern.' but when the machine is being drawn di- Beit known that I, CLEMENT W.l MICHAEL, rectlyiforward as it is intermediate the ends a citizen of the UnitedStates, residing atv of a field being worked, the rear harrow Racine, in ythe county of Racine and State will accurately maintain its central position of Wisconsin, have invented certain new and directlyA behind the front harrow notwith- 60 useful Improvements in Harrows, of which standing` any roughness or unevenness ordithe following is a specification. narily found in agricultural land.

My invention relates more particularly to In the accompanying drawing I have the so-called tandem disk harrowswhich con- Shown and in the following r.specification l0 sisty ordinarily of two distinct members each specifically described a preferred form of 65 Carrying a pairy of transversely arranged my invention; it is to be understood, howdisk shafts, the members being connected ever, that the specific disclosure is for the together so thatvone of them follows the purpose of exemplification only and that my 4other. The disk shafts of each harrow secinvention is not limited thereto but is del5 tion are pivoted thereto -upon opposite sides ined in the following claims in which I 70 thereof and suitable means is provided have endeavored to distinguish it from the whereby the shafts` may be .adjusted about prior without, however, relinquishing or` theii'hpivotsfso as to'vary the angle of inabandoning any feature or portion thereof, rclination thereof to the ,direction of move- Referring now to the 'drawing7 Figure 1 ment of the harrow section. In use the represents my improved harrow in plan, '75 shafts of therforward section are adjusted and Fig. 2 in longitudinal vertical section to mdrrr@ rearwrrrdly toward the center so mainly through the center' of the machine; kthat the action of the vdisks tends to move The specific character of the front and the soil outward from the center of the har- F9211' SGCIOUS iS immaterial. The front see row, while the shafts of the rear section MOH 11S SilOWnl COIHPISGS the tongue 3, for 80 converge forwardly and tend to move the attachment 0I" the horses 0r other' motive soil toward the center. It is common in depower, which is mainly supported by a vices of this character to pivot thc rear truck 4: of ordinary character and at its rear hariow section to the front hai-row section @Hd S PI'OVled With l YULISV'FSE member 5 30. by a reach which is rigidly attached to the @Onrlected-at its ends to said tongue by diag- 85 former and extends forwardly and is ccnonal braces 6, G. The disks 7 of the front trally pivoted to the latter which has the harrow `section are mounted upon shafts S eli'ectof permitting the rear section to folwhich are supported in hangers dependlow thc forward section and also facilitates ing from frame bars l0, and the latter are turning the device in a manner which will pivoted at .l1 to the rear ends of links 90 he readily apparent. It has been found, i' which are attached at i3 to the front section however, that with the rear section pivoted frame. The inner ends of the disk sha 'ts are to the front section as above described at suitably connected to the rear ends roifls lla single central point, the rear section is which at theirforwardends arepiif'otedasat too readily thrown from its proper position 15 t0 adjusting levers 1G ily-which the disk 95 with relation to the forward section when frames may be swung about their pir :is 'to the harrow is being used in connection with adjusstheir angular relation to the front rocky, lumpy or irregular soil. It has also SeCtiOny and arsch har 17 is provided for been proposed to form the two sectionsinto each such lever to maintain the latter in ada rigid whole or, what amounts to the same justed position by engagement with the 100 thing, to mount all the disk shafts upon a spring pressed pin i8 thereon. No novelty single rigid frame. This construction, howis claimed for the barrow section as abovel ever, has the disadvantage that in turning a described. The rear harrow section is also corner, as for example at the end of a field bein the main of well known construction, con-- .ingworketh the disks are scraped sidewise and sisting` of a transverse bar 19 to which the 105 in this way scoop up and displace the top soil.. disk carrying frames are pivoted at 2O.7 20. My invention has in view so connecting the As in the forward harrow sections so here sections that they .may readily turn with the disk frames comprise angle irons 2l by relation to each other when the machine as which said frames are pivoted to the transa whole is to be turned about in a field, verse bar 19 and whichcarry hangers 2Q in which the disk shafts 23 are journaled. Means similar to those on the front section Control the adjustment of the disk frames. The frames also carry forwardly projecting arms 24 which are connected at their outer ends with,the disk shaft by braces 25 and extend beneath ,andl are .supported against the inclined braces 26 by which the transverse rod 19 is connected at its ends to the reaches 27,28.` The transverse bar, dislg shafts and disks and their connections as above described are. old in the art. The

pair of reaches 27, 28, however, form akfean atthe plate 31 whilevnormally 'rigid with re- 'spectA to the ton-gue isa-adjustable about the bolt 32 Abyfwhichjitis connected to the tongue, a bolt 33 extending through a curvedfslot 34 serving to lock the plate n in adj-usted positiom 'A cross brace 35 strengthens and spaces apartv the twin lealchesf27- and 28.

` It will now be apparent' that as long as l,the harrow :is being drawn directly forward fthe forward ends of the reaches 27 28 will i remain in the -rear ends of the slots 30, 29,

respectivelygand the draft of the rear harrow section be' distributed between the two reaches; and by reason of the character of the connection described and shown the rear harrow will 'absolutely maintain its correct position with reference to the front harrow. If for any-reason the harrows do not properly track a slight adjustment ofthe plate 31 by meansof the bolt 33 will serve to correct any deviation.v When itis desired to.

turn the harrow to the ri 'ht or left as the case may be, as for .exam le at the end of maden the field when it is desired to return, the turning of the front harrow section is accomplished with the pin or reach end on the opposite or outer side as a pivot, the reach end on the inside merely running forward 'f--in its slot in the plate. lVhen the turning movement is completed and the harrow again drawn forward the doubleortwin reaches again divide the draft of the rear harrowsection and. serve to maintain it in its correct alinementbehind the front harrow.

Lclaim:

lflln a doiible liarrow, a front and rear frame, means upon the respective frames for forming a double connection between the same, one of said means being angularly adjustable in a horizontal plane to vary the normal angular relation of the frames to each other.

2. Ina device of the class described, a front frame and a rear frame, a pair of pin andslot connections between said frames comprising an angularly 'adjustable plate whereby the normal angular relation of the frames may be Varied.

3. In a double harrow,'a front frame and a rear frame, means upon the front frame carrying a pair of slots, means upon the rear frame carrying pins engaging and movable within the respective slots, one of said means being adjustable to vary the normal angular relation of said frames.

4. In a device of the classfdescribed, a front harrow section having la plate pivoted upon thev rear end of it, means for adjusting said plate about its pivot and for maintaining it in adjusted position, a rear harrow section and a pair of reaches extending from said rear harrow section and engaglng said plate.

CLEMENT MICHAEL. Witnesses i HARRY L., SMITH, LINDA ,FELGENHAUER 

